Saturday, February 4, 2017

Imaging in Ha

Its been a while since Ive posted any images. Sorry.   This past fall I started imaging with a 12nm Ha filter. This type of filter only allows Hydrogen's deep red light to pass threw to the camera.  This is very useful for imaging very faint nebulae. Even under moon lit skies.  The only drawback is you need to double your exposure times or double the iso.  These images where comprised of 10 min. exposures @ 1600iso. In processing the images where converted to grey-scale,   and then some where colorized red.

 M16 (Eagle Nebula)

The Elephant's Trunk (IC1396)

 The Bubble (NGC7635)

The Rosette Nebula {NGC2238)

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